The application describes an apparatus including a non-transitory memory including instructions to perform random access in a beam sweeping network having a cell. The network includes a downlink sweeping subframe, an uplink sweeping subframe and a regular sweeping subframe. The apparatus also includes a processor operably coupled to the non-transitory memory. The processor is configured to execute the instructions of selecting an optimal downlink transmission beam transmitted by the cell during the downlink sweeping subframe. The processor is also configured to execute the instructions of determining an optimal downlink reception beam from the optimal downlink transmission beam. The processor is further configured to execute the instructions of determining a random access preamble and a physical random access channel (PRACH) resource via resource selection from the optimal downlink transmission beam. The processor is even further configured to execute the instructions of transmitting, to a node, the selected random access preamble via the PRACH resource and an uplink transmission beam of the uplink subframe.

A repeater for transferring same-destination frames that are addressed to a destination Electronic Control Unit (ECU) efficiently by receiving the frames from respectively different ports, includes: four ports; and a switcher, wherein the first and second ports respectively originating a communication path to an individual ECU, and the third and fourth ports respectively connected to an individual ECU that is different from the one connected the first and second ports, and when the same-destination frames are received by the third and fourth ports of the repeater at the same time, the switcher distributes the same-destination frames among the first and second ports to be transferred via two, i.e., different, communication paths toward one, i.e., same, destination ECU.

The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. One example includes transmitting a first and a second data signal to a remote unit from a respective first and a second spatially separate antenna of a base station so that the first and second data signals have a first spatial configuration, determining that the first and the second data signals are not spatially separated by the remote unit, reconfiguring the (spatial multiplexing logic 104) spatial configuration of the first and second data signals to a second spatial configuration, and transmitting a third and fourth data signal to the remote unit from a second different antenna configuration according to the second spatial configuration.

The object of the present invention is a method for selecting a terminal of an HD-FDD duplexing model. The invention enables the complexity of a switch of a terminal operating in an HD-FDD duplexing mode, at a level equivalent to that of a terminal operating in a TDD or FDD duplexing mode, to be reduced. To do this, thanks to the invention, it is provided that the terminal operating in an HD-FDD duplexing mode receives notifications or information via a network that programs the HD-FDD terminals through different uplink and downlink transmission models illustrated in FIG. 1. It may also be provided that the terminal operating in an HD-FDD duplexing mode has knowledge of the HD-FDD model to use for its communication. In this event, the complexity of its communication is reduced to the same level as that of a terminal operating in TDD mode.

A method for transmitting an uplink control channel by a terminal in a wireless communication system that supports a plurality of serving cells for the terminal, comprises a step of receiving information on a plurality of serving cells include a P-cell and at least one S-cell constructed for the terminal and timing division duplex (TDD) downlink/uplink setup information for each of the plurality of serving cells, and a step of, in case of transmitting the plink control channel via a specific subframe interval, transmitting the uplink control channel through a first S-cell allocated as an uplink subframe with respect to the specific subframe interval when it is determined, based on the TDD downlink/uplink setup information, that the specific subframe interval is allocated as a downlink subframe with respect to the P-cell.

The present invention relates a wireless access system which supports a full duplex radio (FDR) transmission environment. A method for receiving a signal from a base station by a terminal in the wireless access system which supports FDR transmission according to an embodiment of the present invention comprises the steps of: receiving, from the base station, reference signal mode information indicating resources by which a reference signal is transmitted, from among reference signal available resources by which the reference signal can be transmitted; receiving, from the base station, additional resource mode information indicating additional data resources by which a terminal can simultaneously transmit data, from among the resources by which the reference signal is transmitted; and transmitting the data using the additional resource mode information simultaneously while receiving the reference signal using the reference signal mode information.

The present invention relates a wireless access system which supports a full duplex radio (FDR) transmission environment. A method for receiving a signal from a base station by a terminal in the wireless access system which supports FDR transmission according to an embodiment of the present invention comprises the steps of: receiving, from the base station, reference signal mode information indicating resources by which a reference signal is transmitted, from among reference signal available resources by which the reference signal can be transmitted; receiving, from the base station, additional resource mode information indicating additional data resources by which a terminal can simultaneously transmit data, from among the resources by which the reference signal is transmitted; and transmitting the data using the additional resource mode information simultaneously while receiving the reference signal using the reference signal mode information.

Example methods and systems for adjusting the beam width of radio frequency (RF) signals for purposes of balloon-to-ground communication are described. One example method includes determining, based on respective locations of a plurality of balloons and areas covered by respective ground-facing communication beams of the balloons, a contiguous ground coverage area served by the plurality of balloons, where the communication beam of a balloon defines a corresponding individual coverage area within the ground coverage area, determining a change in position of at least one of the balloons, based on the change in position of the at least one balloon, determining an adjustment to a first of the individual coverage areas in an effort to maintain the contiguous ground coverage area after the change in position of at least one of the balloons, and adjusting a width of the ground-facing communication beam of the balloon corresponding to the first individual coverage area in order to make the determined adjustment to the first individual coverage area.

The present disclosure describes a method and an apparatus for pruning false peaks during slot synchronization at a user equipment (UE). For example, a method is provided to identify a plurality of first peaks associated with a primary-synchronization channel (P-SCH) received at the UE and a plurality of second peaks from the plurality of first peaks. Further, one or more pruning locations along with associated energy thresholds for each of the plurality of the second peaks may be determined and whether a peak of the plurality of the first peaks is a false peak is identified based on whether the peak is located at one of the one or more pruning locations of the peak and an associated energy value of the peak does not satisfy the associated energy threshold of the pruning location. Furthermore, the peak identified as the false peak is discarded.

The present invention relates to a communication assembly comprising a first terminal provided with a first communication module arranged to communicate with a plurality of beacons, each comprising a communication circuit to enable data to be sent and/or received with a particular periodicity Said assembly additionally comprises a second terminal having a second communication module, wherein said second terminal is arranged to scan its environment by means of said second communication module in order to detect the presence of beacons within range and to retrieve for each beacon detected the particular periodicity and a time offset corresponding to the period between a reference point and the start of the transmission of the message and send them to the first terminal.